<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="css.css">
</head>
<body>
<div class="ball ball-1"></div>
<div class="ball ball-2"></div>
<div class="ball ball-3"></div>
<div class="ball ball-4"></div>
<div class="ball ball-5"></div>
</body>
</html>